Yaskawa Z1000U HVAC Matrix Bypass - Manual (Page 213)

n Z1-25: Contactor Close Delay Time
Sets the time to delay after commanding the drive output contactor K2 or bypass contactor K3 or 2-Motor AND/OR contactors
K4 and K5 to open to allow the contacts to close.
No. Name Setting Range Default
Z1-25 Contactor Close Delay Time 0.0 to 5.0 s 0.2 s
n Z1-27 to Z1-29: Control Voltage Protection
The Bypass controller monitors the voltage to the contactor coils and the Bypass controller power supply. The controller will
detect brownout and blackout conditions. Blackout and brownout conditions will trigger an FB08 or FB09 fault and de-energize
the contactor coils.
n Z1-27: Phase Loss Brownout Voltage Level
Sets the brownout condition voltage level.
No. Name Setting Range Default
Z1-27 Phase Loss Brownout Voltage Level 0 to 150 V 98 V
n Z1-28: Phase Loss Brownout Detection Time
Sets the time that the input voltage is continuously measured to be below the Brownout Voltage level before declaring a
brownout fault.
No. Name Setting Range Default
Z1-28 Phase Loss Brownout Detection Time 0.0 to 300.0 s 3.0 s
n Z1-29: Phase Loss Blackout Voltage Level
Sets the voltage level below which is considered a blackout condition.
No. Name Setting Range Default
Z1-29 Phase Loss Blackout Voltage Level 0 to 150 V 0 V
n Z1-30: EF0 Fault Delay Time
Sets the time between declaring a drive fault and opening the drive and bypass contactors.
No. Name Setting Range Default
Z1-30 EF0 Fault Delay Time 0.0 to 300.0 s 1.0 s
n Z1-31: Loss of Load Detection Enable
No. Name Setting Range Default
Z1-31 Loss of Load Detection Enable 0 to 2 0
Setting 0: Disable
Setting 1: Enable and Declare Fault
Setting 2: Enable and Alarm Only
n Z1-32: Loss of Load Drive Frequency
Sets the value to which the drive output frequency must be equal to or greater than for the drive to detect a loss of load.
No. Name Setting Range Default
Z1-32 Loss of Load Drive Frequency 0.0 to 60.0 Hz <1> 60.0 Hz <1>
<1> Values are given in Hz, but actual values are dependent upon unit settings using drive parameters o1-03, o1-09, o1-10, and o1-11.
n Z1-33: Loss of Load Drive Output Current
Sets the value to which the drive output current must be equal to or less than for the drive to detect a loss of load.
No. Name Setting Range Default
Z1-33 Loss of Load Drive Output Current 0.0 to 999.9 A 0.0 A
5.14 Z: Bypass Parameters
YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual 213
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Programming